Happy Vernal Equinox!
by Chas
March 20th, the first day of spring, and the day when the sun should rise exactly between two column of the rotunda when viewed from the center of the dome. even though clouds were forecast, Anne, Khamara, and I headed out to see what we could see. I arrived a bit before 7 am. the lights were still on, and bats were flying about.
the cloud cover continued all morning but we could see a bright spot rising between the columns.
although we didn’t get to see the sun, it was still a magical morning. there is something special about watching the world wake up in such a beautiful location.
Field Trip Explainers 
Isn’t the Equinox on the 21st? Today? Check out Explo’s site on Ancient Observations! http://www.exploratorium.edu/ancientobs/chichen/HTML/glossary.html#equinox
no, I think the key is that the equinox falls near the 21st. this year it happened to be on the 20th.
I believe normally it is the 21st, but this year it was the 20th because it’s a leap year!